Process of forming pipe in continuous lengths.



No. 777,562. PATHN'IED DEC. 13, 1904.

G. B. STRAVS L L'. N* JAGER. PRGGBSS 0F FORMING- .PIPE IN" UNTINUUS LBNGTHS.

I APPLICATIUN FILED PERES. 1904. :N0 MODEL.

v anV metal upon the No. 7\?"i',562. Patented December 13, 1904.

UNITED STATES PATENT OFFICE.

CHARLES l?. STRAVS AND JOHN N. JAGER, OF MINNEAPOLIS, MINNESOTA, ASSIGNORS OF ONE-THIRD TO ANTHONY HUHN, OF MINNEAPOLIS, MINNESOTA. i I

Faeroese oF FoRIvIzNe PIPE IN CONTINUOUS I NGTHS.

SPECIFICATION fOllfiliIlg part of Letters Patent N 0. 777,562, dated December 13, 1904.

Application filed February 23, 1904 Serial No. 194,695. (No specimens.)

To (all w'mnt t may concern:

Be it known that we, CHARLES B. STRAvs and JOHN N. JAGER, of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Processes of Forming Pipe in Continuous the means for holding and moving the sup- Lengths, of which vthe following is a specifiport 9, as we have shown and described suitcation. l able meansfor this purpose in our application The object of this invention is to provide a filed January 19, 1904, Serial No. 189,767.

ro new process of. forming pipe or tubing in con- The upper or inlet portion of the mold will be tinuou's lengths with a series of wires extendheated and the lower or outlet portion cooled. ing lengthwise thereof and embedded therein, This may be done in the manner described in said wires being arranged separately or being our said application of January 2, 1904., Serial formed into a fabric and being' for the pur- No. 187,475, and our application of January pose of strengthening the formed article. 19, 1904, Serial No. 189,767.

The invention consists generally indistribbove the reservoir or distributing-chamthe end of the pipe being formed reste or to which it issecured, as hereinafter described. This support is arranged to move away `from the end of the mold as the article is being formed. We do not in this application show uting metal in molten condition by centrifugal ber We provide a series of spools 11, upon each force upon the inner surface of a cylindrical of which is wound a suitable length of wire mold, cooling-it, and causing it to solidify be- 13. his wire may be solid or hollow in the form of small iiexible tubing. This wire is led from the spools l1 through openings at the upper end of the mold (see Fig. 2) into and through the mold, and the ends of the wire are connected to the support 9. Sufficient tension is brought upon the wires in drawing them through the mold to cause them to Vbe properly distributed in the article being formed. If preferred, the wires may be supported by other means than the spools, and also, if preferre the wires may be formed into `or constitute part of a netting or wire fabric.

In carrying .zo fore it leaves the mold, and embedding in the metal while in molten condition a series of wires or similar articles which remain therein when the metal becomes solidified and strengthen the formed article.

The invention consists, further, in the new process hereinafter described, andparticularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure l is an outo line-section of an apparatus that may be employed for carrying' out our invention. Fig.

2 isla plan view of the same. y

' ln carrying out ourv process We distribute the metal in a molten condition by centrifugal force over the inner surface of a distributingchamber 4, as shown in' Fig. 1, in the manner described in our application, Serial No. 187,47 5,

filed January 2. 1904. From this receptacle,

reservoir, or chamber we distribute the molten inner surface of a 'cylindrical mold 5. To form a pipe or hollow shaft, the

metal is vkept against the inner surface of the mold by centrifugal force, as described in our said application. y

a5 I At the outlet or discharge end ofthe mold,

which is preferably the bottom, the mold being usually arranged in an upright or vertical .v position, We provide a support 9, upon which out our process the wire is first the mold and connected to the support 9. yThe metal is then reduced to a molten condition either in the reservoir or before being placed therein, and this molten metal is then fed into the mold and passes downward therein until it reaches the lower part of the mold and the support 9. The wires 13 are surrounded and embedded in the metal. "We find it preferable not to cool mold until the metal has reached the support 9. The lower part of the mold is then cooled, and the part of the metal therein is solidied. The support is then moved away from the mold in a straight line parallel with the axis put in place, and each wire is carried through' the lower part of the' of themold, and thereby the solidified part of the metal and the lovvei` portions of the Wiresy are drawn out of the mold. rI he Wires are drawn off from the spools and through the mold, and additional metal passes into 'the mold. The meta-l enters the mold in a molten condition and leaves it solidilied and' With the wires embedded therein. A tube or pipe may thus be Jformed, which may be made of any desired length. These wires strengthen the formed article,- being embedded directly in the material thereof. Moreover, by moving the support the pull exerted is upon the wires rather than upon the article. This prevents any cracking or breaking of the material of the article itself and causes the articlev to be drawn through the mold with the embedded Wire, to which the pulling force is applied.

We do not make any in this application. While'we usually employ this process in forming metal articles, it

` may be employed for forming articles of glass or other material.

Ne claim as our invention-n l. The process of forming articles in continuous lengths. consisting in passingaseries claim to the apparatus 'owires through a suitable mold, distributing l molten metal by centrifugal-force over the inl ner surface of said mold and embedding said wires therein, allowing said metal to solidify and drawing the Wires and the solidified metal from the mold. v i 2.1 vThe process of formingarticlesin .con- 1. tinuous lengths, .consisting in passing a series of Wires through a suitable mold, securing their ends to a suitable support, distributing molten metal by centrifugal force over the inner surface of said mold, allowing said metal to solidify, whereby .the'wires become embedded in the metal, moving the support away from the moldand thereby drawing the l metal and the embedded Wires from the mold l and supplying additional*moltenvinetal to the mold the solidified metal is drawn therei from.

Inwitness whereof We have hereunto set ourv (JHARLES B. STRAVS. JQHN N. JGER. v l in presence of C. G. HANsoN, A.. C. PAUL.

l l hands this 16th day of Felnnary,` 1904. 

